#2964: edited MathMenu.js in MathJax.zip and commented out code which caused problems:
if (MENU.msieFixedPositionBug) { MSIE can't do fixed position, so use a full-sized background and an onresize handler to update it (stupid, but necessary) div.width = div.height = 0; this.Resize(); attachEvent("onresize",this.Resize); } else {
otherwise, use a fixed position DIV to cover the viewport
bg.style.position = "fixed";
}
...
/* if (this.msieFixedPositionBug) {detachEvent("onresize",MENU.Resize)} */